Key points are not available for this paper at this time.
PrCl3 shows strong fluorescence from the 3P0, 3P1, and 1D levels to all low-lying levels of the Pr+++ ion (3H, 3F, 1G). This makes it possible to obtain all multiplet components of 3H and 3F. Previously unreported lines in the absorption spectrum are interpreted as transitions to the hitherto unknown 1I6. Zeeman effect data corroborate this. All levels to be expected from a 4f2 configuration are now known for PrCl3 except 1S0 which should give a line in a different part of the spectrum.
Dieke et al. (Wed,) studied this question.